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Statistical Energy Analysis of Noise and Vibration from an Automotive Engine
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English
Abstract
Statistical energy analysis (SEA) is a validated tool for vibro-acoustic modeling of larger systems such as air- and spacecraft, ships, and automobile bodies. In this paper, we report on the application of SEA to model the noise and vibration output of a vee-configuration automotive engine above 1000 Hertz. This approach may complement boundary element methods, which are time consuming to use and can only be applied up to one or two kilohertz. In a feasibility study, experimental data is used to specify power inputs and damping losses, as well as to validate the model. The study shows that SEA can be used to model the vibrational behavior of the engine block at high frequencies that are unattainable with deterministic methods. This result may apply to other structures such as transmissions, pumps, and superchargers.
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Authors
Citation
Kaminsky, C. and Unglenieks, R., "Statistical Energy Analysis of Noise and Vibration from an Automotive Engine," SAE Technical Paper 971975, 1997, https://doi.org/10.4271/971975.Also In
References
- Lalor, N. Stimpson G. SEA Models the Engine Parts FEM Cannot Reach AJA 1992
- Beranek, Leo L. István Vér Noise and Vibration Control Engineering John Wiley and Sons New York 1992
- Lyon, Richard H. DeJong Richard G. Theory and Application of Statistical Energy Analysis Butterworth-Heinemann Boston 1995
- Vibro-Acoustic Sciences, Ltd. AutoSEA Training Course, Version 3.1 1995
- Wu, Lie Ågren A. Applicability of the Experimental Statistical Energy Analysis to an Engine Structure Proceedings of the SAE Noise and Vibration Conference 1995